Lubricating system



July 6 ,1926.

E. W, DAVIS LUBRIGATING SYSTEM Filed July 16,l 1925 @JVM-Dawg Patented July 6, 1,926.

l j 1,591,158 Fahrern,l oFF'lcE.

ERNES'I W. DAVIS, OF OAK PARK, ILLINOIS. ASSIGNOR T0 THE BAS-'SICK MANUFAC- TURING COMPANY, OF CHICAGO, ILLINOIS; A CORPORATION O F DELAWARE.

. LUBnIcATING- SYSTEM.

y v.ippueation mea miie, 1925. serial No. 43,987.

My yinvention relates to improvements in lubricating systems, and is. particularly concerned with the provision of a novel type V of lubricating system to be used for lubrieating the chassis bearings of automobiles and other automotive vehicles.

At the present time,` several different systems'v of lubricating the chassis bearings of automotive vehicles are in use, among which l are the so-called centralized lubricating systems. In some of these centralized lubricating systems a single pump supplies lubricant to all of the chassis bearings through 11umerous conduits, the conduits terminating inr means vfor determining the amount of lubricant fed to each bearing upon each operation of the pump. In other systems the pump itself includes means for determining the quantity of lubricant discharged through each conduit upon .each operation of the pump, and in stlll other systems, restrictions of various kinds are placed in the yconduit leading from the pumpin an attempt properly to distribute the lubricantl to the Vvarious bearin l l 5 y Each of t e above' systems has certain bjectionable features. Either the multiplicity vof pipes leading to the bearin s is j objectionable, on account of the lengt of these conduits and the difficulty and expense of installing them and keepin them in conf dition, vor, in case of branche conduits and -means, either in the conduits themselves or` adjacent the bearings, for proportioning the lubricant fjd to the various bearings, these means hav liable.

The objects of my' present invention are: First, to provide a. system in which the 40` objections toithe known systems are -'eliminated by making use of means that will accurately determine the quantity of` oil orl` lubricant fed to each bearing, in combiynation with comparatively short conduits for reachingthe various bearings. The resistance of the conduits themselves as a ma-v been found more or less unre- 'through one form of pump suitable for' use bearings found on a chassis, and common means for actuating the several pumps.

Fourth, to provide a system, such as described, in which the several pumps are con-, nected by means of levers and linksy so as to make it possible to operate themby means of a single operating member. f Fv'fth, to provide a system, of the characlter described, in which the operating mechanismis carried by the frame of the chassis, but one or more of the pumps are carried by the axles, connections between the operating mechanism and the pumps being such as to compensate for relative movement between the axles and the frame ofthe chassis. yAnd, sixth, to provide'a system,such as ',described, that is simple inv construction, 80

its o eration.

Ot er objects of this" invention will lappear `asthis description.v progresses, reference being had to the accompanying `drawings,'in`which:-F i i Figurel 1 is a plan view of a chassis equipped with a lubricating system embodyin one form of my invention, the chassis bein shown in dotted'outline; t

vFigure 2 is a side elevation ofthe construction shown in Figure 1,;f" v

Figure 3 is a vertical, transverse section,

economical to manufa'ctureand positive in a in my improved system; andv Figure 4 is'a longitudinal section-through rFigure 3, `this section being taken'on line l 1 -.4 olf Figure `3. f j KIn the embodiment-of my invention disclosed vherein I haveillustrated in dotted outline a conventional form of automobile chassis, comprising the side frame members 5 and the front and rearfsprings 6 and 7, these springs being connectedwith .the side members through shackles 8 and 9, respec 105 =tivel The 'springs 6 and 7 are supported byv t e front axle 10 and rear axle 11, respectively, that are in turn supported by the wheels 12 and 13. Iii-.Figure 2 the hood 14 is shown in dotted outline and the parti- 110 tion 15, between the hood and the body of the vehicle,.is illustrated because it forms a support for one of the pump units about to be described. v

The chassis construction just described is, as stated above, purely conventional and forms-no part of my present invention except in combination with 'the elements here. Aafter referred to.

A pump unit 16 -is secured to thefront axle in any suitable manner, as, -or 1nstance, by means of the strips 17, and a similar pur-np'unit'18 is mounted upon' the rear axle housing by means'of similar strips 19. In Figure 1 these pump units are illustrated as lyingupon opposite sides ot one of the chassis side frame members, 'but itis, of course, to be understood that these pump units can bel secured to the axles' at vany suitable points; A' similar pump unit 20 may be screwed, bolted, or otherwise sev cured to the partition 15. The first two pump units, namely,16 and 18, are ilntended to supply lubricant to thebearings carried by, or forming apart of, the front and rear axles, respectively, such, for instance, l'as the king ins 21 andthe rear spring bearing 22. (gil may be conducted to the front shackles 8 of the rear' springs 6 from the rear 'pump unit 18 by means of more or less rigid conduits 23, connected with they chassis constructions.'

Each pump unit comprises a supply tank 31 for holding a supply of lubricant. A plurality of hollow bosses 35 are formed integrally with che bottoni of the supplyl tank and the upper open ends oi each of these bossesy are screwed the cylinders 36, 87, 88 and 39, respectively. These cylinders have inlet openings 40, positioned above the upper e. deci the bosses, and a cheek valve 4l is vielcli d against the discharge end cf .e e.

n incensoaspiring 42 cen-uned b r"vi/cen the check valve cenet 48. (D ci? the conduits described above is conne ed 'with each ci' the bosses 83, nel: and purpose ois conveying lubricant to one or more ci the chassis bearings.

Plungei's 44, 45, 46 and 4'? are reeiprocabiy mounted in the cylinders 86, 3?, 88 and 39, respectively, and the upper' ends link n.

lof these plungers extend. through Suitable I openings in the plate 48. nThe short shaft 49 is journaled in. one end'of the tank 3l and pressed/into a boss 5() on the adjacent end of the plate 48, and a slmilar shafty 51 is journaled in the opposite end of thel tank', keyed `to the other'end ofthe plate by means of the key 52. A crank 53 has a hollow',

boss 54 that receives the outer end of the shaft 51 and is, `keyed tothe shaft 51,b v

means of the key 55.

A cover plate 56 is secured tothe tankv by means of screws 57, or in any other desirable manner. Thls cover platemaybe provided with a illing opening closed by the cap 58. -Forreturning the plate 48 to the position shown in Figure 3, I prefer tc provide.the tension spring 59, one end of which is secured to the cover plateand the other end of which secured `to the plate 48.

For operating the pumps 16. 18 and 20 I prefer to mount a lever 60 at some pointv on the chassis Where it `will be convenient for the operator to manipulate it. In this case it is shown as being secured to a shaft 61, journaledin .abearing block 62 that is secured vto one of the frame members. The leverl 6() has a. handle 63 at its outer .end and a'pivot 64 intermediate its ends. This pivot is connected with the pump 16 by means of the link 65, the bell crank lever 66 and the link .67, the front end of which is pivot-ally connected wit the crank .53 of the pump 16. ln a simllar manner the lever 60 is connected with 4the pump 18 by meansof the link 68,' bell crank Vlever 6*.)

and link y70,. While the' pump 2O is con# nectedwith thelever l6() by means of the In the operation of my improved system, the' tank 31 is partially lled with oil which, vwhen the plungers are in the'position shown in .1F igure .3, ovvs into the lower portions 'of the bores of the cylinders through the inlet openings 46. When the operator grasps handle 63 and pulls it toward the rear, the plungers in allori the cylinders in allthe pumps are forced downwardly past the inlet openings, thereby sealing thecylinders from tue tank 31, and further movement ci the handle causesv the ,i .ungers'to cient a small charge oit lubricant from each cylinder into corresponding conduit and this lubricant ther forced or idowa into the bearing to which 'the conduit is ,cennected `When the e springs ,will return tlieplungers ie operating mechanism to their initial :repeating 'the' princess, as much le desired ce e various bearings? et course, deistcoc; that by varyingthe lengths yf "the plungers, or the diameters of the plungers' and. the cylinders, or in other, kn wn Ways, the quantities ci eil discharged be forced llt) tor releases his hold upon the lhandle tioning the lubricant ,to'

16 and 18 is such that free movementof thel front and rear axles, relatively to the chassis frame, is permitted, and. that these pumps can be operated irrespective of the distance .separating the axles from theframe. Movement of the axles relatively to the 'frame will result in more or less movement of the plungerabut from an inspection of Figure 3 it will be'see'n that before these plungers begin {to discharge lu'' bricant from the c linders, they must travel through a certain istance and' thattliey are.'

ineffective to dischar e lubricant fromthe cylinders until they ghave' paed through this distance. This distance is such that the normal variations in spacing between the axles and the frame lwill notv interfere with the operation of thezvarious pumps. I n other words, theconnections between the operating lever and' thef'variouspumps are such that theyl compensate` for variations in the distances between-,fthe axles, and the frame. A, slight' amountjof play in the various pivot join compensate for lateral displacement .o the axles relatively 4to the frame. -f

From the above description it ywill be 'ap,A

parent that I have-provided .a novel type of positive actingl ricating system comprising simpleV means for properly proport e various bear.- ings of an automotive vehicle chassis. n While I have described the details of construction of one embodiment .of my' invention, it isV to beclearlyunderstood that my invention is not limited to these details but is capable o f other adaptations and modifica-l tions within the, scope ,of theA appended claims. 'k v Having thus described my invention, what Iclaimisz I 1. The combination with ,an automotive vehicle chass'is ,comprisin -front and v rear axles anda frame mounte on and movable relatively 'to said' axles, ofmeans for lubricating someI f the bearings on said axles :and `frame, comprising a supply tank and pump mounted on each axle and Ion said frame and respectively connected with the 'bearings on each 'axle and frame, and common means for actuating all of said pumps,

comprising a single lever and-a linkage connectlon between said lever and eachl of said pumps, the linkage connection between said lever and the pumps on said axles including nieansgfor automatically loom ensating for differences inthe relative posltions of said axles and,l frame -without actuating' said pump. l

2. The combination withan automotive vehicle chassis comprising front and rear` axles and a frame mounted onand movable lrelatively to said axles, of means for lubribearings on each axle and frame, and com-v mon means for actuating all of said pumps, comprising a series of rigid members connected by means of pivots having lhorizontal axes, said members being disposed vto compensate for relative movements between said axles and frame. f l

3. The vcombination with an automotive vehicle chassis comprising front and rear axles and airame mounted on and movable relatively to said axles, of means for lubrieating some of the bearings on said axles and rame, comprising a supply tank and pump mounted on each axle and onsaid framel and respectively connected with the bearings on each axle and frame, and common means for actuating all of said pumps, comprising a series of rigid members pivot- -ally connected to compensate for relative' movements between said axles and frame.

4. The comblnation w1th an automotlve vehiclechassiscomprising an axle and a frame supported thereon and movable relatively thereto, o f means for lubricating bearings on said axle, comprising a pump supported by said axle, conduits for connect-ing said pump with said bearings, and means for actuatlng said pump comprisingan op- 'erative device mounted on said frame vand a seriesof linkages between said operating delframe supported thereon and movable relay tively thereto, of means for lubricating bearings on said'axle, comp-rising a' pump supported by said axle,pconduits2 for connecting said pump with said bearings, and means for actuating said pump comprising` movable I p with said pump, said mechanical means inmeans mounted on said `frame and mechanical means `connecting said movable means 115- cluding means for compensating foryrelative .movements'between said frame and axle.

6. The combination with an automotive Avehicle chassis comprising front and rear pump mounted on each axle and on said frame and respectively connected with the V.bearings on sald axle and frame, and common means for actuating all of said pumps comprising an actuating device on said frame, and, mechanical linkage connections between said device and each of said pumps,

the connectionsto the pumps on 4the'axles including compensating means orper'mittin relative movement between said axles,

an said frame.

"I: The combination with an. automotive vehicle chassis' comprisin front and rear axles arida frame mounte on'and movable `relatively to said axles, of means `for lubrir cating somel of lthe bearings on said-axlesl and frame, comprising a pump Amounted on each axle and on said frame and respectively connected with the bearings-on said axle and frame, and common means for actuating all of said pumps comprising-an actuating device on said frame, and mechanical linkage:

connections between 'said device and each of said pumps, the connections to the pumps on the axles including compensating means `for permitting relative movement between said axles and .saidframe p 8.) lThe'combination with van automotive vehicle chassis comprising front and rear axles and a frame mounted on and movable relatively'to said axles, of means for lubri- ERNEST w. DAVIS.

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